Week 5 Summary - Brain and Behaviour (Perception)

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Which cue involves each eye rotating inward to project the image of an object on each retina?

Oculomotor cues

What is the difference between the two retinal images of an object called?

Retinal disparity

Which type of perception uses cues that make use of optical flow?

Motion perception

What is the essential 'colour' determined by the dominant wavelength in the mixture of the light called?

<p>Hue</p> Signup and view all the answers

What is the overall intensity of all the wavelengths making up light called?

<p>Brightness</p> Signup and view all the answers

What is the perception of objects as constant in size, shape, and other properties despite changes in their retinal image called?

<p>Perceptual constancy</p> Signup and view all the answers

What type of processing is guided by knowledge, expectations, and other psychological factors?

<p>Top-down processing</p> Signup and view all the answers

Which term describes the smallest amount of physical energy a sensory system can detect?

<p>Absolute threshold</p> Signup and view all the answers

What is the term for the smallest difference between stimuli that we can detect?

<p>Just noticeable difference</p> Signup and view all the answers

According to Weber's law, the smallest detectable difference in stimulus energy is a constant fraction of the intensity of the stimulus. Which equation represents this relationship?

<p>JND = KI</p> Signup and view all the answers

Which law states that the perception of magnitude is not absolute but relative?

<p>Stevens's law</p> Signup and view all the answers

Which method is used to estimate how our perception of stimulus intensity is related to the actual strength of the stimulus?

<p>Magnitude methods</p> Signup and view all the answers

Which law describes the relationship between the smallest detectable difference in stimulus energy and the intensity of the stimulus?

<p>Weber's law</p> Signup and view all the answers

Which term describes the smallest difference between stimuli that we can detect?

<p>Just noticeable difference</p> Signup and view all the answers

Which type of processing relies on specific, detailed information elements from the sensory receptors that are integrated and assembled into a whole?

<p>Bottom-up processing</p> Signup and view all the answers

What are some features that are subject to separate analysis in bottom-up processing?

<p>Motion and corners</p> Signup and view all the answers

In face recognition, which features do we tend to rely on more?

<p>Large-scale features</p> Signup and view all the answers

What is attention?

<p>The process of directing and focusing certain psychological resources to enhance perception, performance, and mental experience</p> Signup and view all the answers

What does attention do to our sensory and perceptual systems?

<p>Enhances them</p> Signup and view all the answers

What does attention do to specific information?

<p>Selects it for further processing</p> Signup and view all the answers

What does attention do to unwanted stimuli?

<p>Ignores or screens them out</p> Signup and view all the answers

What does attention do to the flow of resources necessary for performing a task?

<p>Allocates mental energy to it</p> Signup and view all the answers

What processes are involved in attention?

<p>All of the above</p> Signup and view all the answers

According to Fechner's law, constant increases in physical energy will produce ______ increases in perceived magnitude.

<p>smaller</p> Signup and view all the answers

Stevens's power law for magnitude estimation includes a factor that takes into account the ______ sensitivity of various sensory systems.

<p>differential</p> Signup and view all the answers

Signal detection theory is a mathematical model of how a person's ______ and response criterion combine to determine decisions about whether a near-threshold stimulus has occurred.

<p>sensitivity and response</p> Signup and view all the answers

What is the error called when no signal is presented, but the participant decides that there was a signal anyway?

<p>False alarm</p> Signup and view all the answers

What is the error called when a signal occurs but it is not detected?

<p>Miss</p> Signup and view all the answers

What is the error called when a signal occurs and the participant detects it?

<p>Hit</p> Signup and view all the answers

What is it called when a person does not report a signal when none was given?

<p>Correct rejection</p> Signup and view all the answers

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